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Lorien

Back End Developer

Lorien
United Kingdom · Contract · Mid-Senior

Job Title: Senior Backend Developer

Location: Leeds ( 1- day onsite per week)

Duration: 6 Months

Description:

About the Role

Join our US Product Development team, where we build innovative retail systems for Sportsbooks and hotel check-in kiosks across the US. As a senior developer, you’ll lead backend development, mentor engineers, and shape the future of our technology stack. We’re looking fora collaborative, results-driven professional who values simplicity, ownership, and continuous learning.

Key Responsibilities

Technical Leadership

  • Design and build Java microservices using modern Java and Spring Framework
  • Architect scalable, fault-tolerant, high-performance systems
  • Lead initiatives to improve code quality, reduce technical debt, and enhance CI/CD pipelines
  • Promote functional programming and internal open-source practices
  • Mentor junior and mid-level developers, fostering a culture of growth and excellence
  • Facilitate team debugging and problem-solving sessions

Strategic Impact

  • Influence architecture and technical direction across the team
  • Write clean, maintainable code that supports long-term scalability and team contributions
  • Define and uphold development standards and best practices
  • Lead and participate in production support, including on-call rotation

Collaboration & Delivery

  • Work closely with QA to ensure high-quality software delivery
  • Contribute to a culture of continuous improvement and innovation
  • Collaborate across teams and time zones to deliver impactful solutions
  • Help drive the evolution of next-generation sports betting technology

What You’ll Bring

Experience

  • 5+ years of professional Java development experience
  • Deep expertise in Spring Framework and microservices architecture
  • Proven ability to mentor and develop engineering talent
  • Strong background in messaging systems (Kafka, RabbitMQ)
  • Proficiency with AWS, Docker, SQL/NoSQL, and automated testing
  • Experience in Agile environments with a DevOps mindset

Mindset & Skills

  • Ownership mentality with a focus on delivering customer value
  • Strategic thinker with a bias for action and simplicity
  • Passionate about learning, teaching, and raising the bar
  • Comfortable working flexibly to support US-based teams
  • Strong communicator and effective collaborator across disciplines

Bonus Points

  • Degree in Computer Science or related field
  • Experience with Python, TypeScript, Scala, or GraphQL
  • Familiarity with advanced AWS services and hardware interfaces

Key Skills

Ranked by relevance

java microservices aws functional programming typescript python docker devops scala kafka cicd
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Posted
Mar 06, 2026
Type
Contract
Level
Mid-Senior
Location
Leeds
Company
Lorien

Industries

Gambling Facilities Casinos Retail

Categories

Engineering Information Technology Design

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